“This decision was not an easy one as the past 3 years at Treasury have been very rewarding – in large part because of your dedication, ingenuity and hard work,” Duffy wrote. “I will miss working with you; that said, it is time for me to turn another page in my own personal book. Change is inevitable; it comes in many forms and fashions. I have come to learn that it is best not to fight it; instead, I choose to embrace the change.”

Duffy spent 15 years at DoJ before moving to Treasury. He was the deputy CIO, oversaw the agency’s electronic government program and coordinated departmentwide IT policy processes and held several other management and telecommunications positions.

A request to Justice asking for comment on Duffy’s new role was not immediately returned.

As CIO, Duffy oversaw a $3.1 billion IT budget and focused on optimizing the department’s IT infrastructure, such as wide area and local area networks, desktop computers and data centers. He also is looking at how thin client computers can help improve the agency’s cybersecurity and efficiency.